/// <summary>
/// 1. record the collection role that this collection is referenced by
/// 2. decide if the collection needs deleting/creating/updating (but
/// don't actually schedule the action yet)
/// </summary>
/// <param name="coll"></param>
/// <param name="entry"></param>
private void PrepareCollectionForUpdate( PersistentCollection coll, CollectionEntry entry )
{
if( entry.processed )
{
throw new AssertionFailure( "collection was processed twice by flush()" );
}
entry.processed = true;
// it is or was referenced _somewhere_
if( entry.loadedPersister != null || entry.currentPersister != null )
{
if(
entry.loadedPersister != entry.currentPersister || //if either its role changed,
!entry.currentPersister.KeyType.Equals( entry.loadedKey, entry.currentKey ) // or its key changed
)
{
// do a check
if(
entry.loadedPersister != null &&
entry.currentPersister != null &&
entry.loadedPersister.HasOrphanDelete )
{
throw new HibernateException( "Don't dereference a collection with cascade=\"all-delete-orphan\": " + coll.CollectionSnapshot.Role );
}
// do the work
if( entry.currentPersister != null )
{
entry.dorecreate = true; //we will need to create new entries
}
if( entry.loadedPersister != null )
{
entry.doremove = true; // we will need to remove the old entres
if( entry.dorecreate )
{
log.Debug( "forcing collection initialization" );
coll.ForceInitialization();
}
}
}
else if( entry.Dirty )
{
// else if it's elements changed
entry.doupdate = true;
}
}
}